const path = require('path')
const Koa = require('koa')
const app = new Koa()
const views = require('koa-views')
const json = require('koa-json')
const onerror = require('koa-onerror')
const bodyparser = require('koa-bodyparser')
const logger = require('koa-logger')
const cors = require('koa2-cors');
// const session = require("koa2-cookie-session").default;
// console.log(session)
import session from 'koa2-cookie-session'
const index = require('./routes/index')
    // const users = require('./routes/users')

// error handler
onerror(app)
app.use(async(ctx, next) => {
    ctx.token = ctx.query.token||ctx.request.body&&ctx.request.body.token||ctx.request.header.token;
    console.log('从URL,body,heade获取token设置在ctx.token', ctx.token)
    await next();
})

app.use(session({
    key: "SESSIONID", //default "koa:sid" 
    expires: 3, //default 7 
    path: "/" //default "/" 
}));
// middlewares
app.use(bodyparser({
    enableTypes: ['json', 'form', 'text']
}))
app.use(cors())
app.use(json())
app.use(logger())
    // console.log(path.join(__dirname,'../dist'))
    // console.log(pat)
app.use(require('koa-static')(path.join(__dirname, '../dist')))
    // app.use(require('koa-static')(__dirname + '../dist/'))

app.use(views(__dirname + '/views', {
    extension: 'pug'
}))

// logger
app.use(async(ctx, next) => {
    const start = new Date()
    await next()
    const ms = new Date() - start
    console.log(`${ctx.method} ${ctx.url} - ${ms}ms`)
})

// routes
app.use(index.routes(), index.allowedMethods())

// error-handling
app.on('error', (err, ctx) => {
    console.error('server error', err, ctx)
});

module.exports = app